I'm not an expert in Hotel Property Management Systems (PMS), however I think that Oracle/Micros/Opera are all the same systems. And ClearPass supports two Hotel integrations, FIAS and HTNG:
.. where FIAS is listed as Micros Opera. On ClearPass this functionality is part of ClearPass Guest; you might need specific licenses or services (part number: 5009-297) from Oracle on your Opera system as well to support this integration.